Episode
Why biomining might finally work: How Endolith is using microbes and data to unlock more copper from low-grade ore
- Podcast
- Interchange Recharged
- Published
- Jul 28, 2026
- Duration seconds
- 2156
- Processing state
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Summary
Copper is moving from background commodity to frontline constraint. Demand is rising fast, high-grade deposits are getting harder to find, and the lead times for bringing new supply online remain brutally long. That matters not just for renewables and electrification, but for the basic energy resilience of modern life: the wires that keep lights on, water running, refrigeration working, and data centres scaling all depend on a metal the industry already knows is becoming harder to source. Host Sylvia Leyva Martinez is joined by Liz Dennett, founder and CEO of Endolith, whose career spans Wood Mackenzie, AWS, and NASA-linked astrobiology research, to explore a biological approach to one of mining’s toughest problems. Endolith uses microbial communities, what Dennett calls “the world’s oldest miners," to help recover more copper from low-grade ore in existing heap leach operations. The company’s core thesis is that copper supply can be made more elastic not by rebuilding mine sites from scratch, but by layering biology, sensing, and robust data architecture into brownfield operations that are already running. Liz explains how that works on site: low-grade ore is stacked into large heaps, irrigated with sulfuric acid, and treated with microbes that accelerate the chemical pathways needed to liberate more copper into solution. The appeal is not futuristic moonshot capex, but a modular, plug-and-play system designed to fit into existing mine infrastructure with minimal downtime. The discussion looks at why that matters economically. Endolith is targeting ore bodies and waste streams that are currently too messy, too low grade, or too contaminated to recover efficiently through conventional routes, including arsenic-rich material that can be especially problematic for…